Typewriter



G. G. GOING.

TYPEWRITER.

APPLscAHoN FILED MAR.1. 1919.

1,403,494. Patented Jan. 17, 1922.

f ATTORNEYS G. G. GOING.

TYPEWRITER.

APPLlcATloN FILED MAR.1.1919.

Patented Jan. 17, `1922.

2 SHLE fS-SHEET 2A UNITED STATES PATENT oFElcE.

GEORGE GOULD GOING, OF MIDDLETOWN, CONNECTICUT, ASSIGNOR T0 THE NOISELESS TYPEWRITER COMPANY, CONNECTICUT.

TYPEWRITER.

Specification of Letters Patent.

Patented Jan. 17, 1922.

Application led Harch 1, 1919. Serial No. 279,955.

To all 'whom it may concern:

Be it known that I, GEoRGE GoULD GOING, a citizen of the United States, residing at Middletown, in the county of Middlesex and State of Connecticut, have invented certain new and useful Improvements in Typewriters, of which the following is a full, clear, and exact description, such as will enable other skilled in the art to which it appertains to make and use the' same.

This invention relates to typewritlng machines, and more particularl to instrumentalities thereof co-operable w1th a multi-color inkin ribbon to permit printing in either one cfa plurality of colors.

It is one of the objects of the invention to provide an improved and reliable mechanism of the character mentioned adapted for application to a typewriting machine having three printing case positions.

Further `objects are to provide an improved ribbon guide operable at will to reverse an inking ribbon adjacent the printing point whereby the ink impregnated in the ribbon may be impressed on the paper from either side of the ribbon, to utilize the latter to its f ull capacit and to associate such a guide with the shiftable part 0f a typewrlting machine having three case positlons whereby a multi-color ribbon may be etlicientl used.

It 1s a further object to provide an improved mechanism of the character `men` tioned comprising parts capable of cheap manufacture and assembly and possessing features of structural superiority and functional advantage.

Other objects andhadvantages will be in part noted hereinafter in connection -with the following description of the accgmpanying drawings, which illustrate a preferred, but exemplary, embodiment of the invention and in which- Figure 1 is a rear elevation of the =im proved ribbon guide,

Fig. 2 is an end view thereof, taken from the left of Fig. 1;

Fig. 3 is a view similar toFlg. 1, but showing the parts in an adjusted 1position;

Fig. 4 is an end view of 1g. 3;

Fig. 5 isa schematic top view of the ribbon guide associated with the ribbon and ribbon spools; l

Fig. 6 is a fragmentary perspective View u of the ribbon guide as mounted;

Fig. 7 is a rear View of a supporting and actuating part;

Fig. 8 is a top view thereof;

F ig'. 9 is an endx view of the same as mounted on a shift rail; and Y Fig. 10 is a detail perspective of one of the parts shown in Fi 5.

The mechanism illustrated is designed for mounting below and closely' in front of a typewriter platen on which the Writing paper is rolled, and includes a pair of s'paced bent wire ribbon guidesv 1 and 2 rotatably mounted in bearings 3 arranged at the upper ends of arms 4 integral with a stamped metal main piece or bracket 5. A ribbon is adapted to be threaded from one spool 6 around a yieldable pin 7, through the guide wires 2 and 1, around a second yieldable pin 9, to the other spool 10 (Fig. 5). It will be understood that the ribbon feed is reversible and that the spools 6 and 10 serve alternately as takeup and delivery rolls.

The intermediate ribbon portion 11,'which is held taut in registry with theprinting point before the platen, is adapted for reversibility by rotation of the guides 1 and 2 in their bearings 3, and for this purpose said guides are provided with rigidly attached crank arms 12 beyond bearings 3 and to the ends of which are pivotallyl connected links 13 extending downwardly adjacent arms 4 and pivotally connected at their lower ends with bell cranks 14, in turn fixed to the extremities of a rock shaft 15 extending between and journaled in the arms 4. Said rock shaft is provided at one end with a hub having thereon a pinion 16 which meshes with two studs 20 and 21 equi-distant from the axis 19 and alternatively adapted for engagement by an actuating mechanism to beA described, whereby lever 18 may be rocked to swing rack 17 and thereby turn pinion 16 and shaft 15 to move connecting links.\13 and rotate guides 1 and 2 from the position shown in Fig. 1 through 180 degrees to the reversed position shown in Fig. 3.

f The actuating mechanism` above mentioned includes a reciprocable plate 22 having a slot and pin connection 23, with the fore face of stamping 5 andv carrying two reversely disposed elements inthe form of bell cranks respectively pivoted at the front and rear of spaced lugs 24 and 25 of sliding plate 22. The elements last mentioned include horizontally disposed arms extending in opposite directions and terminating in enlarged ends cut away to afford upper prongs 26 and 27, respectively, and lower prongs 28 and 29, respectively, and include downwardly projecting arms 30 and 31, respectively, constituting the other branch of the bell cranks. The last-mentioned arms 30, 31 are connected by a coil spring 32 tending to draw the same toward each other against stops 33 rovided-therefor on the sliding plate 5. he recessed enlarged ends of the bell crank elements embrace the studs 21 and 20 of the rocking lever 18 between the prongs 26, 28 and 27, 29 respectively, and the parts mentioned are of such relative dimensions that when one stud 21 is in the apex of the recess between pron s 26 and 28, the other stud 20 is at the wic e opening between the other prongs 27 and 29, and vice versa. The lower prongs 28 and 29 are also provided on their rear faces with projecting studs 34 and 35 which extend through and beyond trapezoidal openings 36 and 37, respectively, in the main stamping 5.

As will be ap arent from the construction thus :farA descri ed, movement of theA plate 22 to the left in Fi 1 carries the bell crank rong 29 against t e stud l20 and raises the atter to rock rack 17 of lever 18 upwardly, and this motion is permitted by the coincident movement to the left of the opposite bell crank prong 28, which relatively brings the other lever stud21 into the wide opening between prongs 26,28, and thus causes the manipulation parts to assume the position shown in Fig. 3 where the oscillation of lever 18 is represented as effecting reversal 4of the ribbon guides 1 and 2,.

The sliding plate 22 terminates in an upright 37 adapted for connection through a link 38 (Fig. 6) and arm 39 with the end of a forwardl lextending shaft or rod 40 extending to t e front ofthe machine for by the operator. Consequently, b rocklng shaft 40 the position of the ribbon guides l and 2 may be expeditious] controlled' at will to carry the e. g. blac portion 41 of the ribbon above (Fig. 1), or below (Fig. 3) the e. g. red

ortlon 42 thereof. In mounting, the device 1s positioned so that the upper color strip' of the ribbon between the guides l and 2 registers with the instant printing line when the platen is in middlel case or upper case osition, and consequently, by reversingl the aceofthe ribbon printing-may be effected in either color desired by the mechanism described in the two case positions mentioned. The parts of the ribbon guide mechanism thus far described are supported as shown in Fig. 6, wherein stamping 5 is indicated as fittin a slot 43 between upturned portions of a ent bracket plate 44, the latter being rigidly fixed at 45 to a stationary cast block 46 of the machine base. Fig. 6 illustrates the mounting at only one end of the ribbon guide mechanism, but it is tobe understood 4that a duplicate instructionand assembly is either one of three positions correspond` ing vto the printing case positions of the platen v Also rigidly fixed to the fore face of rail 49 is a stamped bracket 50 (Figs. 7 8 and 9). This bracket comprises spaced forwardly extendin arms 51 having` right angled extremities for attachment by screws, or other- \wise, with the carriage rail and a front horizontally disposed plate 52 having therein similar but Oppositely disposed triangular openings 53, and having, also, on itsl fore face two spaced studs 54, 55. In assembly, the main stamping 5 is positioned with respect to bracket 50 so that'thelugs 54 and 55 of the latter fit into vertical spaced slots 56 and 57 of the stamping 5. At the same time the studs 35 and 34 on the bell crank extremities 29 and 28, respectively,project through the triangular apertures 53 in bracket 50. These parts are so proportioned that stud 34 fits in the narrow apex -58 of one of the openings 53 while the other stud 35- is disposed in the vertically wide portion'of the other opening 53 and vice versa.

As described, the bracket 50 is attached to and shifts vertically, with the carriage rail 49 and platen thereon. With the ribbon uide mechanism in the osition shown in ig. 1, printing is effecte through the upper colorstrip 41 ofthe ribbon in middle case position. Thereupon when the carriage is moved to upper case osition stamping 5 and all the parts carried3 thereby are correspondingly elevated by the bracket 50, which seizes the stud 34 in the apex 58 of the corcarriage rail 49 is depressed to bring the platen through middle case position to lower case position, stamping 5 seats against brackets 44 and continued downward movement of bracket 50 with the carriage rail causes a depression of stud 34 and with the latter stud 21 rock lever 18 and reverse the ribbon guides 1 and 2 thereby bringing the ribbon color strip 41 to lower position and in registry with the then printing line. The operation is similar with the parts positioned as in Fig. 3. That is to say, if the ribbon is turned to effect printing through the color strip 42 in middle and upper case positions, then shifting of the carriage rail 49 to lower position causes stud 35 to be lowered by the wall of the other bracket opening 53 and thus stud 20 is lowered to rock the lever 18 in the other direction and reverse the guides 1 and 2, whereby the color strip 42 is kept in registry with the then printing line.

The embodiment of the invention above described is particularly designed for application to the Noisele'ss typewriter and is of special advantage therewith, since the Noiseless machine includes a rigid bed plate positioned immediately in advance of the printing point and serving to support and guide the type carriers in their operation toward and from the platen. Further, the typewriter ribbon is drawn above the surface of the bed plate mentioned and so closely adjacent thereto as to make objectionable its bodily lowering when the carriage is shifted to lowest case position. By the mechanism as herein shown and described, however, a mere rotation of the intermediate ribbon portion 11 insures accurate and automatic registry-of the selected color portion in the different printing case positions, and this is accomplished by a minimum bodily displacement of the ribbon.

In order to yieldingly. hold the ribbon tight, and also afford a clear length thereof sufficient to take up twists in the plane thereof when rotated, the ribbon is threaded from spools 6 and 10 around pins 7 and 9, as indicated in Fig. 5. The construction of these pins is shown more clearly in Fig. 10, and each comprises a spindle 59 which screws vertically into the machine fram-e adjacent the corresponding spool and carries a bent stamping 60 pivotally supported and urged by a coil spring 61 to carry an upright arm 62 and adjacent pin 63 toward the side of the machine. The ribbon is' brought on the outer side of pin 59 and thence between end 62 and pin 63 so that the intermediate portion 11 'of the ribbon may yield upon pressure of the type carriers thereagainst and so that, further, rotation of the guides 1 and 2 is easily effected.

As many changes could be made in the above construction and many apparently widely different embodiments of this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limitingr sense.

It is also to be understood that the language used in the following claims is intended to cover all of the generic and specific features of the invention herein de-y scribed and all Statements of the scope of the invention which, as a matter of language, mi ht be said to fall therebetween.

aving described my invention, what I claim as new and deslre to secure by Letters Patent is: Y

1. In a typewriting machine, in combination, a part shiftable to different printing case positions, a ribbon guide positioned in horizontal registry with the vprinting point, and means to effect a reversal of said ribbon guide upon movement of said shiftable part from one case position to another.

2. In combination, a part shiftable to different printing case positions, a ribbon guide to hold a ribbon in registry with the printing point, meansito move Said guide with said part when shifted to one position, and means to hold said guide against movement with said part when shifted to another position but to rotate said guide to maintain the same portion of the ribbon in registry with Vthe printing point.

3. In combination, a shiftable part having three case positions, guides for a multi-color ribbon, means to rotate said guides at will to maintain either color portion of the ribbon in registry with the printing line in one case position of said part, and means to automatil cally maintain the same portion of the ribbon in registry with the printing line butfaced oppositely thereto upon shifting of said part to another case position.

4. In a typewritingmachine, in combination, aA ribbon guide including spaced members to hold a ribbon in a plane substantiall parallel to the printing plane, spaced horizontal bearings for said members, and means including a reciprocable plate to eiect rotation of said members in said bearings through 180 degrees.

5. In combination, a supporting bracket having a horizontal body rtion and upstanding spaced arms, rib on guides pivotally supported on horizontal axes by said arms, a rock shaft journaled throughtI said arms and operatively connected with said guides, a pinion on said shaft, a lever pivoted on said bracket and having a rack in mesh with said pinion, and means to move said lever to rock said shaft and rotate said guides through substantially 180 degrees at will. Y

6. In a typewriting machine, in combination, a part shiftable to different printing spools to said guide, yieldable means totension the ribbon adjacent said spools, and means to rotate said guide to reverse the ribbon adjacent the printing point.

In testimony whereof I affix my signature, 15 in the presence of two Witnesses. v f GEORGE GOUID GOING. Witnesses:

HARRIET E. HUBBARD, NEIJJE M. SEIFERMAN. 

